2024 · Enduro · Buyer's Guide
Sold in the US as KTM 300 EXC Six Days
Two-Stroke Factory Weapon
The 300 EXC TBI Sixdays is KTM's two-stroke argument in its purest form: 293 cc, 54 hp, and 35 lb-ft in a chassis built to be thrown at terrain most bikes get carried through. Throttle body injection gives the motor a clean, linear pull instead of the on-off snap a carbureted 300 delivers, and the spread is broad enough that you stop hunting for gears. Suspension is the other half of the story. The fork and shock are both adjustable, and 11.8 inches of travel up front with 12.2 in back means the bike takes hits you flinched at.
This is a specialist, and it wears that honestly. The 37.8-inch seat plus 14.0 inches of ground clearance tell you exactly which rider this was drawn for. It rewards technique and punishes laziness. The caveats are real: some owners see excessive piston blow-by and power valve wear as early as 20 hours when the bike is ridden hard or the oil pump map isn't sorted, and the engine can boil over after a few minutes of slow, high-load work.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 54 hp (40 kW) |
|---|---|
| Torque | 35 lb-ft (48 Nm) |
| Displacement | 293 cc |
| Engine | Single-cylinder |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Final drive | Chain |
| Fork | Upside-down (USD) |
| Front brake | 260 mm |
| Front tire | 90/90-21 |
| Rear tire | 140/80-18 |
| Wheelbase | 58.7 in (1490 mm) |
| Ground clearance | 14.0 in (355 mm) |
| Front travel | 11.8 in (300 mm) |
| Rear travel | 12.2 in (310 mm) |
| Seat height | 37.8 in (960 mm) |
| Dry weight | 238 lb (108 kg) |
| Fuel capacity | 2.4 gal (9 L) |
Equipment check
Chassis
Lighting
Safety
Piston blow‑by and power valve wear
Some owners report excessive blow‑by on the piston and power valve issues as early as 20 hours, particularly when the bike is ridden hard or the oil pump map is not optimized.
Overheating in hard enduro
The engine can boil over after only a few minutes of slow, high-load riding; a radiator fan is often fitted by owners, and burping the cooling system is difficult due to the new radiator cap design.
Push-button light switch failure
The LED headlight may shut off unexpectedly due to a faulty push-button switch that won't stay engaged.
Where this KTM 300 EXC TBI Sixdays pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Seat height
Forget spec-sheet bragging. Here's who the 300 EXC TBI Sixdays is actually built for.
If your idea of a good day is slickrock, sand, and lines that need real skill, this is the sharpest tool on the list. Just plan your fuel stops around 2.4 gallons and watch the temperature when the pace drops.
Made for Kane Creek Recreation Area · Moab · Imperial Sand Dunes Recreation Area
It will hold its own on a track and the suspension has the travel to cope, but this bike was tuned for traction and survival in tight terrain, not for moto starts and big-air landings.
Made for Loretta Lynn's Ranch · Carnegie State Vehicular Recreation Area · Pala Raceway
It will clear anything a BDR throws at you, but 2.4 gallons of fuel and a 37.8-inch seat make multi-day logistics genuinely hard. Wrong tool for long connecting miles.
Made for Arizona Backcountry Discovery Route · Southern California Backcountry Discovery Route · Colorado Backcountry Discovery Route
If you're cross-shopping the older generation, here's what changed.
Previous generation · 2017
Two-Stroke Enduro Taken Seriously
Compare to the previous model →If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
Any price note compares both bikes at the same age — the youngest age both have on the used market — against this KTM 300 EXC TBI Sixdays. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.
